Scania WTA DTC 237 Water pump

WTA WTA control unit · Scania

Code 237 (decimal). Some diagnostic tools show it in hexadecimal as 00ED.

In short

The water pump does not move.

Applies to: WTA1

What does Scania WTA fault code 237 mean?

The water pump does not move.

What causes Scania DTC 237?

The water pump is short circuited, blocked. Short circuit in the water pump or cable harness.

How to fix Scania WTA fault code 237?

  1. Check the water pump.
  2. Measuring points 3 and 6 in the harness-to-harness connector for the auxiliary heater control unit.
  3. Resistance value: Approximately 4 ohms Check the cable harness.
  4. Check internal harness-to-harness connectors in the auxiliary heater.

This information is for guidance only. Always follow the manufacturer workshop manual and safety procedures; if in doubt, contact an authorised workshop.